diff --git a/libqca-2.1.0.3-use-Q_SLOT-and-Q_SIGNAL.patch b/libqca-2.1.0.3-use-Q_SLOT-and-Q_SIGNAL.patch
new file mode 100644
index 0000000..d03a178
--- /dev/null
+++ b/libqca-2.1.0.3-use-Q_SLOT-and-Q_SIGNAL.patch
@@ -0,0 +1,28 @@
+From: Jan Grulich <jgrulich@redhat.com>
+Date: Thu, 17 Sep 2015 14:14:24 +0000
+Subject: Use Q_SLOTS/Q_SIGNALS instead of slots/signals in all headers from include dir
+X-Git-Url: http://quickgit.kde.org/?p=qca.git&a=commitdiff&h=66b9754170759d9333d5fc1e348642814d0310dd
+---
+Use Q_SLOTS/Q_SIGNALS instead of slots/signals in all headers from include dir
+REVIEW:125289
+---
+
+
+--- a/include/QtCrypto/qca_safetimer.h
++++ b/include/QtCrypto/qca_safetimer.h
+@@ -44,12 +44,12 @@
+ 	void setSingleShot(bool singleShot);
+ 	int timerId() const;
+ 
+-public slots:
++public Q_SLOTS:
+ 	void start(int msec);
+ 	void start();
+ 	void stop();
+ 
+-signals:
++Q_SIGNALS:
+ 	void timeout();
+ 
+ protected:
+
diff --git a/libqca.spec b/libqca.spec
index be73753..31816af 100644
--- a/libqca.spec
+++ b/libqca.spec
@@ -2,7 +2,7 @@
 
 Name:          libqca
 Version:       2.1.0.3
-Release:       2mamba
+Release:       3mamba
 Summary:       Qt Cryptographic Architecture (QCA)
 Group:         System/Libraries
 Vendor:        openmamba
@@ -12,6 +12,7 @@ URL:           http://delta.affinix.com/qca/
 Source:        http://download.kde.org/stable/qca-qt5/%{version}/src/qca-qt5-%{version}.tar.xz
 Patch0:        qca-2.0.3-gcc-4.7.patch
 Patch1:        libqca-2.1.0.3-qt5-5.5.patch
+Patch2:        libqca-2.1.0.3-use-Q_SLOT-and-Q_SIGNAL.patch
 License:       LGPL
 ## AUTOBUILDREQ-BEGIN
 BuildRequires: glibc-devel
@@ -64,19 +65,23 @@ This package contains static libraries and header files need for development.
 %setup -q -n qca-qt5-%{version}
 #%patch0 -p1
 %patch1 -p1
+%patch2 -p1
 
 %build
 %cmake -d build \
-   -DQT4_BUILD=ON
+   -DQT4_BUILD=ON \
+   
 
 %make
 
 cd ..
+
 %cmake -d build-qt5 \
    -DQT4_BUILD=OFF \
    -DQCA_SUFFIX=qt5 \
    -DBUILD_TESTS=OFF \
-   -DQCA_INSTALL_IN_QT_PREFIX=ON
+   -DQCA_INSTALL_IN_QT_PREFIX=ON \
+   -DCMAKE_CXX_FLAGS="%{optflags} -Wno-narrowing"
 
 %make
 
@@ -167,6 +172,9 @@ rm -fr %{buildroot}%{_qt4_datadir}/qca/certs
 %doc README TODO
 
 %changelog
+* Fri Jul 22 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 2.1.0.3-3mamba
+- upstream headers patch to use Q_SLOT and Q_SIGNAL
+
 * Wed Dec 23 2015 Silvan Calarco <silvan.calarco@mambasoft.it> 2.1.0.3-2mamba
 - patched to fix missing qt5 include in header